Home Page › Forums › Network Management › ZeroShell › block K5 listening UDP PUBLIC port using iptables – how? › Reply To: block K5 listening UDP PUBLIC port using iptables – how?
January 26, 2016 at 6:19 am
#52722
Participant
Just found your post and had the same issue.
What worked for me was the following firewall rules done in the web interface in the INPUT chain
ppp0 * REJECT tcp opt — in ppp0 out * 0.0.0.0/0 -> 0.0.0.0/0 tcp dpt:749 reject-with icmp-port-unreachable
ppp0 * REJECT udp opt — in ppp0 out * 0.0.0.0/0 -> 0.0.0.0/0 udp dpt:88 reject-with icmp-port-unreachable
Confirmed working on external ip with
nmap -p749 -sUT x.x.x.x
and
nmap -p88 -sUT x.x.x.x